3100000000 has 162 divisors, whose sum is σ = 7984370912. Its totient is φ = 1200000000.

The previous prime is 3099999953. The next prime is 3100000027. The reversal of 3100000000 is 13.

It is a happy number.

It is a super-2 number, since 2×3100000000² = 19220000000000000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 99999985 + ... + 100000015.

Almost surely, 2^3100000000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3100000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3992185456).

3100000000 is an abundant number, since it is smaller than the sum of its proper divisors (4884370912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3100000000 is an frugal number, since it uses more digits than its factorization.

3100000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 4.

The square root of 3100000000 is about 55677.6436283002. The cubic root of 3100000000 is about 1458.0997358267.

Adding to 3100000000 its reverse (13), we get a palindrome (3100000013).

The spelling of 3100000000 in words is "three billion, one hundred million", and thus it is an aban number.